Chamber of a handgun

ABSTRACT

A chamber of a handgun includes a chamber body displaceable along a longitudinal axis, a firing pin guided to move axially in the chamber body, a firing pin spring associated with the firing pin and a small breech arranged at the rear end of chamber body. A sliding sleeve actuatable by a cocking slide is arranged to cock and uncock the firing pin spring. The cocking slide contains a control cam for axial displacement of the sliding sleeve by a slide part that can be moved in a straight line in the direction of longitudinal axis of chamber body and projecting rearward relative to small breech.

FIELD OF THE INVENTION

The invention relates to a chamber of a handgun. The invention alsorelates to a handgun with such a chamber.

BACKGROUND

A generic chamber is known from DE 20 2011 002 579 U1. It comprises achamber body rotatable about a longitudinal axis and axiallydisplaceable in the longitudinal direction of the weapon, a firing pinaxially movable in the chamber body, and a small breech arranged at therear end of the chamber body, in which a cocking mechanism that can beactuated by a cocking slide is accommodated to cock and uncock a firingpin spring that acts on the firing pin. The cocking mechanism forcocking and uncocking the firing pin spring contains a sliding sleevethat is axially movable within the breech and a lever arrangement bymeans of which the sliding sleeve can be axially displaced when thecocking slide is actuated. The lever arrangement consists of anoperating lever arranged within the breech so as to be pivotable about atransverse pin and an intermediate lever linked to it, which isconnected to a slide part of the cocking slide extending through therear wall of the breech into the interior of the breech. A relativelylarge number of parts are required for this lever arrangement in thisknown chamber, which increase the cost and assembly effort. An elongatedhole for the inward extending slide part of the cocking slide is alsorequired on the rear side of the breech. This elongated hole must becovered by an additional cover plate to prevent contamination.

SUMMARY

One aspect of the invention relates to a chamber of a handgun and ahandgun with such a chamber, in which the chamber can be easilyassembled and permits simple and reliable operation with fewer parts.

Accordingly, a chamber of a handgun and a handgun with such a chamberare disclosed herein. Expedient further developments and advantageousembodiments of the invention are also disclosed herein.

The chamber of a handgun according to the invention contains a chamberbody displaceable along a longitudinal axis, a firing pin guided so asto be axially movable in the chamber body, a firing pin spring assignedto the firing pin, and a small breech arranged at a rear end of thechamber body, in which a sliding sleeve actuatable by a cocking slide isarranged to cock and uncock the firing pin spring. The cocking slidecontains a control cam for axial displacement of the sliding sleeve bymeans of a slide part movable in a straight line in the direction of thelongitudinal axis of the chamber body and projecting rearward relativeto the breech when the cocking slide is displaced between a loweruncocked position and an upper cocked position. Only a small passageopening is required in the breech due to the slide part movable in astraight line in the direction of the longitudinal axis of the chamberbody. The slide part only executes a straight linear movement andtherefore only requires limited space. Since the slide part alsorequires only a small passage opening in the chamber body, costly coversto prevent entry of contamination are also unnecessary. The passageopening can be covered by the cocking slide in all possible positions sothat no additional covers or costly protective measures are necessary. Alarge travel path of the cocking slide is also made possible with fewcomponents in the chamber according to the invention, so that simple andeffective force transfer can be achieved for cocking of the firing pinspring. The cocking characteristics can also be simply altered withoutexpensive modifications by changing the control cam within the cockingslide.

In a particularly advantageous and easy-to-assemble implementation, theslide part projecting rearward relative to the breech can be made in onepiece with the sliding sleeve. The slide part in an expedient embodimentcan be designed, for example, as a rearward projecting extension of thesliding sleeve. The slide part, however, can also be designed as aseparate component, for example, in the form of a pin or the like. Onlya small passage opening, designed, for example, as an elongated hole andrunning in the direction of the longitudinal axis of the chamber body,through which the rear end of the slide part extends, is necessary inthe breech for the slide part.

In order to permit particularly low-friction connection between thecontrol cam on the cocking slide and the slide part, a contact rollerrotatable about a transverse axis can expediently be arranged on therear end of the slide part for contact against the control cam.

In a further advantageous method, the slide part can be supported on asupport roller mounted to rotate in the breech. A rotatable roller canalso be arranged on a firing pin nut fastened on the rear end of thefiring pin for guiding between the firing pin nut and the slide part.

The inclined control cam can be expediently arranged on the rear side ofa downwardly narrowing triangular recess in the interior of the cockingslide. The cocking slide can be guided to move in a sloping guide grooveon the back of the breech. A spring-loaded pushbutton can also bearranged in a recess on the guide groove to secure the cocking slide inan upper cocked position.

The invention also relates to a handgun with the chamber just described.

A control cam can be arranged on the chamber body of the chamber to movea breech holding element between a lowered off-safe position to permitfiring by the trigger mechanism when the chamber is locked and a raisedsafe position to prevent firing by the trigger mechanism when thechamber is unlocked. A safety against undesired discharge can thus beachieved via the chamber when the chamber is not locked.

BRIEF DESCRIPTION OF THE DRAWINGS

Additional details and advantages of the invention are apparent from thefollowing description of a preferred embodiment example with referenceto the drawing:

FIG. 1 shows a chamber and trigger mechanism of a repeating weapon in aside view;

FIG. 2 shows the chamber and trigger mechanism shown in FIG. 1 withblanked out parts;

FIG. 3 shows a sectional view along line A-A of FIG. 1 ;

FIG. 4 shows a breech of the chamber shown in FIG. 1 with a cockingslide in an exploded view;

FIG. 5 shows a sectional view of the chamber shown in FIG. 1 in a cockedposition;

FIG. 6 shows a sectional view of the chamber shown in FIG. 1 in anuncocked position;

FIG. 7 shows a sectional view of the chamber and the trigger mechanismin a cocked position and

FIG. 8 shows a sectional view of the chamber and the trigger mechanismin a half-cocked position.

DETAILED DESCRIPTION

A chamber 1 and a trigger mechanism 2 of a handgun designed as arepeating weapon are shown in different views in FIGS. 1 to 3 . Thechamber 1 guided to move in known fashion in a breech housing 3 shown inFIGS. 5 and 6 contains a cylindrical chamber body 6, axially movable inthe direction of a longitudinal axis 5 by means of a bolt handle 4 androtatable between a locked position and an unlocked position about thelongitudinal axis 5, and a small breech 7 arranged on its rear end.Locking elements 8 designed as locking pins or the like are provided inknown fashion on the front end of the cylindrical chamber body 6 to lockthe chamber 1 in the breech housing 3, a receiver collar, or a barrel.

An axially movable firing pin 9 shown in FIG. 2 and a firing pin spring10 arranged coaxially around the firing pin 9 are arranged in thechamber body 6 and breech 7 of chamber 1. A firing pin nut 11 axiallymovable within breech 7 is fastened on the rear end of the firing pin 9viewed in the direction of firing.

The trigger mechanism 2 contains trigger 14 that can be pivoted about afirst transverse pin 13 within a trigger housing 12, which in thedepicted embodiment example consists of a trigger blade carrier 15rotatable about the first transverse pin 13 and a trigger latch 16releasably fastened to the bottom of trigger blade carrier 15. A triggerguard 17 is fastened to the bottom of the trigger housing 12. Thetrigger mechanism 2 also contains a sear 19 mounted to pivot about asecond transfer pin 18 in trigger housing 12, which contains a sear stop20, apparent in FIG. 2 , to engage with a stop edge 21 of the firing pinnut 11. The sear 19 is forced upward into a cocked position in thedirection of a firing pin nut 8 via a spring 22, as shown in FIGS. 7 and8 .

In order for the sear 19 to be movable by the operation of trigger 14from its upper cocked position for securing the firing pin nut 11 into alower half-cocked position to release the firing pin 9, according toFIG. 2 , a rocker-like transfer element 24 pivotable about a thirdtransverse pin 23 is provided within trigger housing 12 between trigger14 and sear 19. The rocker-like transfer element 24 can be moved betweena holding position to secure the sear 19 in the cocked position and arelease position to move the sear 19 into the half-cocked position.

It is apparent from FIG. 1 that a fork-like breech catch element 25 isarranged on the trigger housing 12 movable transverse to chamber 1. Thebreech catch element 25 is forced upward by compression springs 26,shown in FIG. 3 , and has a pin 27 on the top to engage in alongitudinal groove 28, shown in FIG. 1 , on the outside of chamber body5. Lowering of the breech catch element 25 can occur via a control slide29 movable in a guide groove 29 on the side of trigger housing 12 via alever 31 rotatably mounted on trigger housing 1. Lever 31 is designed asa double-arm lever pivotable centrally about a pivot 32, so that thebreech catch element 25 can be lowered by raising the control slide 30for disassembly of chamber 1. The breech catch element 25 is forced intothe raised breech blocking position by the compression springs 26, shownin FIG. 3 .

The breech catch element 25 can be moved by a control cam 63, shown inFIG. 3 and further explained below, on the outside of chamber body 6between a lowered off-safe position to permit firing by triggermechanism 2 when chamber 1 is locked and a raised safe position toprevent firing by trigger mechanism 2 when chamber 1 is unlocked.

As can be seen from FIG. 4 , the small breech 7 arranged on the end ofthe chamber body 6 has a sleeve-like attachment 33 extending into a rearopening of the hollow cylindrical chamber body 6 and a sloped rear guidegroove 34 with a T-shaped cross section with a sloping contact surface35 and an inward angled lateral guide wall 36 for movable guiding of acocking slide 37. The cocking slide 37 is guided to move in guide groove34 between a lower uncocked position, shown in FIG. 5 , and an uppercocked position, shown in FIG. 6 . A pushbutton 40 acted upon with acompression spring 39 is provided in a recess 38 in the contact surface35 to secure the cocking slide 37 in the upper cocked position or torelease the cocking slide 37 for its movement into the lower uncockedposition. A sliding sleeve 41 cooperating with the firing pin spring 10is also guided to move in breech 6 axially in the direction of thelongitudinal axis 4 of chamber 1. The sliding sleeve 41 has a slide part43 extending through a passage opening 42 in the contact surface on itsback side. In the depicted embodiment, the slide part 43 is made in onepiece with the sliding sleeve as an inwardly extending thin extension.The extension in the depicted embodiment is arranged above the centeraxis of the slide part 43. However, the slide part 43 could also bedesigned as a separate component. A contact roller 45 rotatable about atransverse shaft 44 is arranged on the rear end of the slide part 43.

It can be seen in FIGS. 5 and 6 that the cocking slide 37 arranged onthe back of breech 6 contains an inner control cam 46 to move thesliding sleeve 41 over the slide part 43. The sloped control cam 46 isarranged on the back of a downwardly tapering triangular recess 47 inthe interior of cocking slide 37. The contact roller 45 of slide part 43lies against the control cam 46. A support roller 48, also shown in FIG.4 , which can be rotated about a transverse pin 49, is also situated inbreech 7. The slide part 43 is supported to be linearly displaceable onthe support roller 48. An additional rotatable roller 50, via whichguiding is achieved between the firing pin nut 11 and slide part 43, issituated on the rear end of the firing pin nut 11 displaceably arrangedinto a downwardly open groove of the sliding sleeve 41. A catch element52 to block breech 7, acted upon by a spring 51, is arranged in a frontopening on the front side of breech 7.

The triangular recess 47 in the interior of cocking slide 37 is designedwith control cam 46 so that the sliding sleeve 41 is pushed forwardaxially in the direction of longitudinal axis 5 during movement ofcocking slide 37 from the lower uncocked position, shown in FIG. 5 ,through contact of the contact roller 45 rotatably mounted on the end ofslide part 41 against control cam 46. The contact roller 45 then slidesby rolling from the upper end to the lower end of control cam 45. Duringforward movement of sliding sleeve 41, a washer 53 arranged on the rearend of the firing pin spring 10 is also pushed forward, thereby cockingthe firing pin spring 10. In the upper cocked position of cocking slide37, the pushbutton 40 upwardly acted upon by compression spring 39 isalso released and can move into an upper holding position to secure thecocking slide 37 in the upper cocked position. Only when the pushbutton40 is pressed again can the cocking slide 37 be moved back into thelower uncocked position.

In FIG. 7 , the trigger mechanism 2 cooperating with chamber 1 is shownin a cocked position. In this figure, it can be seen that therocker-like transfer element 24 rotatable about transverse pin 23 has aforward extending first arm 54 as viewed in the direction of firing andan upwardly projecting second arm 56 that engages in a recess 55 of sear19. A lower first stop 57 is provided on the front end of the upwardlyprojecting first arm 54 to engage with a first counter stop 58 ontrigger 14. The first counter stop 58 is arranged in an upwardprojecting part 59 of the trigger blade carrier 15 pivotable abouttransverse pin 13. An upper second stop 60 is provided on the upwardprojecting second arm 56 of the rocker-like transfer element 24 toengage with a forward projecting second counter stop 61 in the recess 55of sear 19. The second stop 60 on the second arm 56 of the transferelement 24 and the second counter stop 61 in the recess 55 of sear 19are designed so that the sear 19 can be moved downward into ahalf-cocked position by a counterclockwise rotation of the transferelement 24.

The trigger mechanism 2 in FIG. 7 is shown in a cocked position. Therocker-like transfer element 24 lies with its front first stop 57 on thefirst counter stop 58 on the upper end of the upward projecting part 59of trigger latch 15. In this position of the rocker-like transferelement 24, the rear second stop 60 of the rocker-like transfer element24 engages beneath the second counter stop 61 on sear 19, so that thesear 19 is held in the upper holding position. The firing pin nut 11 isheld by the sear stop 20 in this upper holding position.

By retracting trigger latch 16, the first counter stop 58 on the upperend of the trigger blade carrier 15 releases the front first stop 57 ontransfer element 24, so that the transfer element 24 can rotatecounterclockwise and the front first arm 54 can move downward. Thesecond stop 60 on the second arm 56 of transfer element 24 thendisengages from the second counter stop 61 on sear 19, so that the sear19 can be rotated into the lower half-cocked position to release thefiring pin 9 acted upon by firing pin spring 10.

FIG. 7 also shows that a blocking element 62, here in the form of a pin,is arranged on the breech catch element 25, which can be displacedtransversely to chamber 1, which cooperates with the forward projectingfirst arm 54 of transfer element 24 to block or release trigger 14. In alowered off-safe position of breech catch element 25, shown in FIG. 7 ,the blocking element 62 is spaced from the bottom of the first arm 56,so that the transfer element 24 can be rotated counterclockwise todischarge a shot. In a raised safe position of breech block element 25,as shown in FIG. 8 , on the other hand, the front first arm 56 oftransfer element 24 is forced upward by the blocking element 62, so thatthe transfer element 24 cannot be rotated clockwise into its releaseposition, and sear 19 is held in its upper cocked position.

When chamber body 6 is rotated into an unlocked position from a loweredoff-safe position, shown in FIG. 7 , by raising of chamber stem 4, thebreech catch element 25 is moved into a raised safe position, shown inFIG. 8 , via a control cam 63, which can be seen in FIG. 3 , designed asa radial groove on the outside of chamber body 6. A control cam 63 has afirst control surface 64 on which the upper pin 27 of the breech catchelement 25 forced upward by compression springs 26 stops in a blockedposition of chamber body 6 and by means of which the breech catchelement 25 is forced into the off-safe position. The control cam 63 alsohas a second control surface 65 following the first control surface 64in the peripheral direction of chamber body 6 and recessed relative toit, on which the upper pin 27 of the breech catch element 25 forcedupward by compression springs 26 stops when chamber body 6 is unlockedand by means of which the chamber catch element 25 reaches the raisedsafe position.

In the locking position of chamber 1, shown in FIG. 3 , the breech catchelement 25 forced upward by the two compression springs 26 lies with itsupper pin 27 against the first control surface 64 and is forced downwardby it into the off-safe position, shown in FIG. 7 . In the off-safeposition, the pin-like blocking element 62 is spaced from the bottom ofthe forward projecting arm 54 of the rocker-like transfer element 24, sothat the rocker-like transfer element 24 can be rotated counterclockwisewhen trigger 14 is operated, and the firing pin nut 11 arranged on theend of firing pin 9 can be released for half-cocking of the firing pin 9via sear stop 20.

If, on the other hand, the chamber stem 4 is raised in the lockingposition shown in FIG. 3 to unlock chamber 1, and the chamber body 6 istherefore rotated counterclockwise, as viewed in the firing direction,pin 27 on the top of the breech catch element 25 comes against thesecond control surface 65 of control cam 63 offset inward relative tothe first control surface 64, so that the breech catch element 25 canmove upward into the raised safe position under the action of springs26.

In the completely unlocked position of chamber 1, pin 27 reaches thelongitudinal groove 28 of chamber body 6 running in the longitudinaldirection, so that the chamber 1 can be pulled rearward to open thechamber breech. The longitudinal groove 28 has a stop surface 66, shownin FIG. 1 , on its front for stopping of pin 27 of the breech catchelement 25. This prevents the chamber 1 from being completely pulled outof the chamber collar during repeated firing. For disassembly of chamber1 the breech catch element 25 can be moved by the control slide 29 intoa lowered disassembly position via lever 30.

List of reference numbers 1 Chamber 2 Trigger mechanism 3 Breech housing4 Chamber stem 5 Longitudinal axis 6 Chamber body 7 Small breech 8Locking element 9 Firing pin 10 Firing pin spring 11 Firing pin nut 12Trigger housing 13 First transverse pin 14 Trigger 15 Trigger bladecarrier 16 Trigger latch 17 Trigger guard 18 Second transverse pin 19Sear 20 Sear stop 21 Stop edge 22 Spring 23 Third transverse pin 24Transfer element 25 Breech catch element 26 Compression spring 27 Pin 28Longitudinal groove 29 Guide groove 30 Control slide 31 Lever 32 Pivot33 Attachment 34 Guide groove 35 Contact surface 36 Guide wall 37Cocking slide 38 Recess 39 Compression spring 40 Pushbutton 41 Slidingsleeve 42 Passage opening 43 Slide part 44 Transverse shaft 45 Contactroller 46 Control cam 47 Recess 48 Support roller 49 Transverse pin 50Roller 51 Spring 52 Blocking element 53 Washer 54 First arm 55 Recess 56Second arm 57 First stop 58 First counter stop 59 Upper part of triggerblade carrier 60 Second stop 61 Second counter stop 62 Blocking element63 Control cam 64 First control surface 65 Second control surface 66Stop surface

1. A chamber of a handgun with a chamber body displaceable along alongitudinal axis, a firing pin that is guided to be axially movable inthe chamber body, a firing pin spring assigned to the firing pin, and abreech arranged at a rear end of chamber body, in which a sliding sleeveactuatable by a cocking slide is arranged for cocking and uncocking ofthe firing pin spring, wherein the cocking slide contains a control camfor axial displacement of the sliding sleeve by means of a slide partthat can be moved in a straight line in a direction of the longitudinalaxis of the chamber body and projects rearward relative to the breechwhen the cocking slide is moved between a lower uncocked position and anupper cocked position.
 2. The chamber of a handgun according to claim 1,wherein the slide part is formed in one piece with the sliding sleeve.3. The chamber of a handgun according to claim 1, wherein the slide partis designed as a rearwardly projecting extension of the sliding sleeve.4. The chamber of a handgun according to claim 1, wherein a rear end ofthe slide part extends through a passage opening of the breech, thepassage opening running in a direction of the longitudinal axis of thechamber body.
 5. The chamber of a handgun according to claim 1, whereina contact roller rotatable about a transverse axis is arranged on a rearend of the slide part for contact against the control cam.
 6. Thechamber of a handgun according to claim 1, wherein the slide part issupported on a support roller rotatable in the breech.
 7. The chamber ofa handgun according to claim 1, wherein a rotatable roller is arrangedon a firing pin nut fastened to a rear end of the firing pin for guidingbetween the firing pin nut and the slide part.
 8. The chamber of ahandgun according to claim 1, wherein the control cam is sloped andarranged on a rear side of a downwardly narrowing triangular recess inan interior of the cocking slide.
 9. The chamber of a handgun accordingto claim 1, wherein the cocking slide is displaceably guided in aninclined guide groove on a rear side of the breech.
 10. The chamber of ahandgun according to claim 9, wherein a spring-loaded pushbutton isarranged in a recess on the guide groove to secure the cocking slide inan upper cocked position.
 11. A handgun with the chamber according toclaim 1, wherein the chamber is guided to move in a breech housing and atrigger mechanism.
 12. The handgun according to claim 11, wherein acontrol cam is arranged on the chamber body of the chamber to move abreech catch element between a lowered off-safe position to allow firingby the trigger mechanism when the chamber is locked and a raised safeposition to prevent firing by the trigger mechanism when the chamber isunlocked.
 13. A handgun comprising: a chamber with a chamber bodydisplaceable along a longitudinal axis; a firing pin that is guided tobe axially movable in chamber body; a firing pin spring assigned to thefiring pin; and a breech arranged at a rear end of the chamber body, inwhich a sliding sleeve actuatable by a cocking slide is arranged forcocking and uncocking of the firing pin spring, wherein the cockingslide contains a control cam for the axial displacement of the slidingsleeve by means of a slide part that is movable in a straight line in adirection of the longitudinal axis of the chamber body and projectsrearward relative to the breech when the cocking slide is moved betweena lower uncocked position and an upper cocked position.